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Finding the Fourth Proportional to 290,178.81, 432,911.88 and 274,484.25

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Solution

The fourth proportional to 290,178.81, 432,911.88 and 274,484.25 is: 409,497.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,178.81 : 432,911.88 = 274,484.25 : x
  2. Step 2: Convert to fraction form
    290,178.81/432,911.88 = 274,484.25/x
  3. Step 3: Cross multiply
    290,178.81x = 432,911.88 × 274,484.25
  4. Step 4: Simplify right side
    290,178.81x = 118,827,492,697.89
  5. Step 5: Solve for x
    x = 118,827,492,697.89/290,178.81
  6. Step 6: Final answer
    x = 409,497.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.